Mahle 55388 Engine Cylinder Head Gasket - Right

Engine sealing for select Ford and Lincoln applications

This Mahle cylinder head gasket is built for select Ford and Lincoln engines that require a right-side multi-layer steel sealing solution. It uses OEM-standard construction and is specified for applications where precise combustion sealing is critical.

Key features

• Multi-layered steel construction for stable sealing performance.
• OEM standard grade for factory-style replacement fit and function.
• 0.034 in. thickness for the specified engine application.
• 3.72 in. bore diameter to match the listed cylinder bore requirement.
• Contains the right cylinder head gasket as listed in the product data.

Detailed description

Mahle 55388 is an engine cylinder head gasket engineered with multi-layered steel material and a 0.034 in. thickness. It is listed for the right side on 2021-2023 Ford Expedition, 2021-2023 Ford F-150, and 2021-2023 Lincoln Navigator, with additional 2017-2020 Ford F-150, 2018-2020 Ford Expedition, and 2018-2020 Lincoln Navigator coverage that notes cylinder head bolt replacement is necessary for proper installation. This part cross-references Ford OE numbers HL3E-6051-AB and HL3Z-6051-A for the same application.

What this part helps address

• Combustion gas leakage at the cylinder head sealing surface.
• Coolant or oil seepage caused by a worn head gasket.
• Compression loss from a damaged sealing interface.
• Service replacement needs after cylinder head removal.
• Fitment-specific sealing requirements on listed Ford and Lincoln engines.

Installation notes and quality assurance

Install only on the listed right-side applications and verify cylinder bore and gasket thickness before assembly. For 2017-2020 Ford F-150, 2018-2020 Ford Expedition, and 2018-2020 Lincoln Navigator applications, the fitment data specifies replacement of cylinder head bolts for proper installation. Mahle states that its gaskets provide sealing products trusted by OEMs and technicians worldwide. Part number 55388 is also referenced by Ford OE numbers HL3E-6051-AB and HL3Z-6051-A.